21391552

素因数分解:

$2^6\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3673}}^1$

素因数の和:3705

約数の個数: 56

約数和(自身を含む): 52258976

約数和(自身を除く): 30867424

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 64, 91, 104, 112, 182, 208, 224, 364, 416, 448, 728, 832, 1456, 2912, 3673, 5824, 7346, 14692, 25711, 29384, 47749, 51422, 58768, 95498, 102844, 117536, 190996, 205688, 235072, 334243, 381992, 411376, 668486, 763984, 822752, 1336972, 1527968, 1645504, 2673944, 3055936, 5347888, 10695776, 21391552]

約数ペア:

[(1, 21391552), (2, 10695776), (4, 5347888), (7, 3055936), (8, 2673944), (13, 1645504), (14, 1527968), (16, 1336972), (26, 822752), (28, 763984), (32, 668486), (52, 411376), (56, 381992), (64, 334243), (91, 235072), (104, 205688), (112, 190996), (182, 117536), (208, 102844), (224, 95498), (364, 58768), (416, 51422), (448, 47749), (728, 29384), (832, 25711), (1456, 14692), (2912, 7346), (3673, 5824)]